Drop Down List in Datagrid

aashish · April 21st, 2005, 10:25 AM

If any body help me how can I put drop down list in my datagrid, I am trying since 6 days for this but it runs but I am not able to populate the list from the server..
In advance Thankyou.
aashish

bmains · April 21st, 2005, 12:10 PM

Use a template column, which can accept a dropdownlist.

Brian

r_ganesh76 · April 22nd, 2005, 12:00 AM

Hope this helps. I use the combo in the template column like this

Code:

<asp:TemplateColumn HeaderText="State">
    <HeaderStyle HorizontalAlign="Center" CssClass="GridHead"></HeaderStyle>
    <ItemStyle HorizontalAlign="Left" CssClass="SearchResultItem"></ItemStyle>
    <ItemTemplate>
        <asp:Label id=lblEmp Runat="server" Text='<% # DataBinder.Eval(Container.DataItem, "EmpID") %>'>
        </asp:Label>
    </ItemTemplate>
    <EditItemTemplate>
        <asp:DropDownList id="cboEmp" Runat="server" ></asp:DropDownList>
    </EditItemTemplate>
</asp:TemplateColumn>

Regards
Ganesh

planoie · April 22nd, 2005, 09:44 AM

Here's an example of how to bind a DDL inside a datagrid to related information:

http://www.geekdork.com/samples/complexDatagrid.aspx

-Peter

vinod_pawar1 · April 26th, 2005, 11:11 PM

Hello there,

This is fine when it comes to populating a combobox in all the rows, but what if I would want to add a combobox in header only.
I would put a combo in header just to give a facility to filter records based on value selected in the combobox.

you can see such functionality in Microsoft Excel when you put auto filter, it shows comboboxes on each header column and puts unique values in it. so that if a user want to filter values he can do it just using these combo boxes.

Thank you

Vinod Pawar
India

planoie · April 26th, 2005, 11:27 PM

This is a little bit trickier because there is no template for the header of a column. Instead you need to latch into the ItemCreated or ItemDataBound event of the grid, then programmatically add the DDL control to the column header's controls collection.

Although I've not actually done this, I think the best approach might be to add the control in the ItemCreated handler (because this will get called on postbacks when the grid is re-constituted from viewstate) and then populate the DDL's data in the grid's ItemDataBound event. No need to rebind data in each ItemCreated call.

-Peter